Meet our Coaches
Coach Robbie Espinosa
Robbie Espinosa is the President of Espinosa Baseball Lessons and has built a reputation across Southern California for running a structured, consistent, and professional training program. For more than a decade, families have trusted his program for clear instruction, accountability, and real development over time.
Robbie played at Irvine Valley College before continuing at Colorado State University Pueblo, where he earned his degree in Business Management and finished with a .341 batting average. His background is built on preparation, repetition, and understanding how players develop through consistent work.
Over the last 10+ years, Robbie has trained more than 2,500 athletes across Southern California, working with players from beginner youth levels to advanced high school, college, and professional athletes. His instruction covers hitting, pitching, catching, and defensive development, with a focus on clean mechanics, repeatable movements, and routines that carry into games.
Every session is run with structure and purpose. Players are coached with attention to detail, held accountable, and expected to show consistent effort. Families know what to expect, and players understand how to improve.
Outside of baseball, Robbie spends time tournament bass fishing, hunting, and flying airplanes.
Coach Brandon Hemminger
Brandon Hemminger played at Esperanza High School before continuing his career at Hope International University, competing at the collegiate level. His background gives him a clear understanding of what translates from training into game performance.
Within the program, Brandon is known for being consistent, prepared, and reliable. He runs structured sessions, communicates clearly, and builds trust with both players and families through his approach and presence.
He is currently pursuing a degree in Speech Pathology, which shows in how he teaches. He is able to break down movements, make adjustments in real time, and communicate in a way players understand and apply.
His instruction covers hitting, pitching, fielding, catching, and throwing, with a focus on clean mechanics, repeatable movements, and building habits that carry into games.
Outside of baseball, Brandon stays active through weight training and follows the game closely.
Coach Nathan McManus
Nathan McManus was born and raised in Yorba Linda and played baseball at Yorba Linda High School before beginning his collegiate career at Fullerton College. He later continued as a pitcher at the University of Arkansas at Monticello, competing at the NCAA Division II level while earning his bachelor’s degree in Exercise Science.
Nate brings his playing experience and education directly into his coaching. His background in Exercise Science gives him a strong understanding of how mechanics, movement, strength, and athletic development work together, allowing him to help players develop both their baseball skills and overall athletic ability.
His instruction covers pitching, hitting, and defensive development, with a focus on clean mechanics, repeatable movements, and building routines that translate into games. Nate also leads weekly Hitting & Defensive Clinics, giving players an opportunity to develop their skills in a structured group training environment.
In addition to private lessons and clinics, Nate oversees the Espinosa Baseball Lessons Remote Strength & Performance Training Program. He creates individualized training programs designed to improve strength, speed, power, mobility, and overall athletic performance based on each athlete’s needs and goals.
As a Yorba Linda native, Nate takes pride in returning to the community where his baseball career began and helping develop the next generation of players.
Coach Josh Sanchez
Josh Sanchez played baseball at Esperanza High School before continuing his career at Irvine Valley College and later Lindsey Wilson College at the NAIA level. His experience competing at multiple levels of college baseball gave him a strong understanding of the preparation, consistency, and work required for players to continue developing and create opportunities at the next level.
Josh brings that experience directly into his coaching and works with players across a wide range of ages and skill levels. He places a strong emphasis on building trust with his athletes and developing relationships that allow players to communicate, learn, and get the most out of each training session.
His instruction covers catching, hitting, fielding, and pitching, with a focus on sound mechanics, consistent development, and building routines that translate into games. Josh works to help players understand not only what adjustments to make, but why they are making them, so they can become more confident and independent as they progress.
Josh believes the habits developed through baseball can benefit athletes beyond the field. He emphasizes preparation, accountability, consistency, and effort while helping players build routines that support their long-term development.
Outside of coaching, Josh stays active through weight training and running while continuing to study the game and expand his knowledge of player development.
Coach Scott Moore
Coach Scott Moore brings over 25 years of coaching experience in baseball and softball throughout Orange County. Since 1998, he has worked with players at the Little League, travel ball, and high school levels, including West Yorba Linda Little League and El Dorado High School. His long standing presence in the local community, along with his experience as a father of five athletes, gives him a strong understanding of both player development and what families are looking for.
Scott is known for his calm, patient approach and his ability to connect with younger athletes. He creates a structured environment where players can learn fundamentals the right way while building confidence through repetition and consistency.
His instruction focuses on hitting, throwing, and fielding fundamentals, with an emphasis on proper mechanics, steady improvement, and helping players feel comfortable and confident on the field. He is a strong fit for beginner and developing players who need clear instruction and a positive environment to grow.
In addition to baseball, Scott competed in collegiate tennis at University of Redlands, where he won a Division III National Singles Championship. He remains active in competitive tennis and enjoys watching his son Dylan play professionally with the Seattle Mariners, Texas Rangers, and Philadelphia Phillies.
Parents can expect patient, structured sessions with clear instruction and a focus on building strong fundamentals from the ground up.